/*
 * Copyright 2015 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.integration.kafka.util;

import org.springframework.integration.kafka.core.KafkaMessage;

import kafka.serializer.Decoder;
import kafka.utils.Utils$;

/**
 * @author Marius Bogoevici
 */
public class MessageUtils {

	public static <T> T decodeKey(KafkaMessage message, Decoder<T> decoder) {
		if (!message.getMessage().hasKey()) {
			return null;
		}
		return decoder.fromBytes(Utils$.MODULE$.readBytes(message.getMessage().key()));
	}

	public static <T> T decodePayload(KafkaMessage message, Decoder<T> decoder) {
		if (message.getMessage().isNull()) {
			return null;
		}
		return decoder.fromBytes(Utils$.MODULE$.readBytes(message.getMessage().payload()));
	}

}
